Superheater



B. BROIDO SUPERHEATER May 18 1926. 1,585,229

Filed Sept. 1. 1922 3 Sheets-Sheet 1 a i 1' il awvwntoz flaw/27min in/W0 a5, I213 mm, 0

B. BROIDO SUPERHEATER May 18 1926.

F'iled Sept. 1, 1922 3 Sheets-Sheet 2 HM 0 P .5 5M .m 3 m May 18 1926. 1,585,229

B. BROIDO SUPERHEATER Filed Sept. 1, 1922 s sheets-sheet 5 en Jam; Bra/Ha Snvewtoz io' heater embodying the invention Fig. 21s a 5 9 T- D STA ESrffP-AT 'r OFFICE.

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v surnnnnaryin. a maon mea September 1, .1922. Serial in. 585,603.

f The invention has for its object'the' proholes in beams 14, which rest on supports' vision of a superheater for steam 1n whlch and abut against stops 16 of these supports. the degree to which the steam is superheated Inthe face of plate 11 opposite. the superis readily controlled and varied, and which heater pipes 8 there is a series of undercut 5 possesses certain-other advantages which; grooves 17 which are fitted with refractory 00 'will appear as the description proceeds. mater1a118. v v Mymventionis illustrated in theaccom The-plate 11 is preferably made in seepany'ing drawings, in which -F1g-I l- Shows-a time, t such' sections bein shown c'or-: longitudinal section of a" bo ler and. s'u' er respondmg to thethree vertica .rows of bars section-"on line 2+2 of Fig. 1-; 'Fi 3is 'an may be varied to suit circumstances. elevation looking toward the bac of the In the operation of the device, steam flow-- boiler; Fig. 4 is an enlarged detall View of ng through the superheater is superheated in a portion of Fig. 2; Fig. 5 is a view similar its course through pipes 8 by heat transmit- 1510 Fig. 4, illustrating a modification; Fig. 6 tedbyplates 11 from the hot furnace-gases section on line 6+6 of Fig. 4; and Fig. :7 striking these. plates on their iurnace side i i '31" fragmentary sectional view illustratm'g and by radiation from -tl1e "fue1 bed" itself.

M sal modification. Throughout-the views por- The maximum amountofh'e'at is absorbed I ionsfhave beenbroken away when this by the tubes when they. are held in intimate 20 would not impair clearness. 1 contact along their entire length with'plates y For purposes-of illustration'l' show,.,n}y 1 1'-by the screws 13. It it is desired to ob invention applied to ,a superheater nsed 1n tain less superheat some or all ofsorews 13- connectionwith a boiler of .a certain type; are Blackened, so that the contactbf tubes 8 butit will be understood that it is in no way with plates 11 becomes less intimate. The

confined-to such a boiler, and; may likewise precise change in-the contact that accurate" 12. This is again a matter of choice and be used in a superheater which is separately" any given casemaybe yery difiicult t d fired and not associated with any b91181: mine, aswith such a slackening oflthe'screws Ofjhe boiler there are shown' m Fig. 1. large separated areas may remain in contact ,only such parts as are re uired to make clear or the areas'remaining incontact may be r I 3 its relation to the super eater. [The water minute and spread more uniformly over the. tubes '1 connect'front and rear headers '2, 3,- entire area. In. a case th ta area m a,

'35 he'ader3. 'Steam' generated inthe boiler is the rate of heat transfer 40 nectwith-low'er su erheater header 9, from Hot gases. f f e 4 el on the r contact will probably bes maller than before way toward the sta k ug e. openmg the'set'screws are slackened. A very ight btwefin the'end b13516 5 a the a slackening results in 'a-large diminutgn of" led irom the drum (not shown) by .6 The refractory material 18 makes ossible i to the ugper header 7 oi the superheqte'r. an additional control of the degreeo super;- 3 This hea er 7 has secured to it theseriesof heatnbtained; 'IIt acts as a partial ,rotec super-heater pipes 8 whose other ends con tion a ainstthehe'at or the furnacegases' y a .andt ehot fuel bed and by-omitting or i the end "10fof-wh1c the steam l's-led to, the removinggthematerial from-some of the point of'use.

- grooves Iorportionsof-all ofthem the heat The s'uperhe'ater 'pxpesS'b'ear over'half the transfer' through plates 11 is ncreased.

areas of their; straight portions against the This is more permanent adjustment as it 5 plate 11, which is made ofcastiron or other a be. mgde'onlyiwhile there isno fire in suitable material and isprovided'with semi the furnace while the adjustment first de-1 cylindrical grooves to accommodate th scribed'can be mad'e'with the boiler in servicepipes. To keep the p'ipa'sB In engagem and with very little trouble. 5 v I with. the plate 11 there are rovided'the Themodification of' Fig. '5 consists in '50 bars '12." In the form shown ere are nine furtherprotecting platesqll by extending W such ba rs 12, but obviously the .bars may be the 'refractoryfmaterial 18" into portions be'-" made longer or shorter, or spaced wider or 'yond the grooves 17. The regulation by closer, to suit conditions. Each bar 12 is omitting the material from some grooves is forced against the pipes 8 bv. means of a possible in this case as in the other.

series of screws 13 screwed through threaded- In the forms so far described the transmitted by plate 11 is received by it on one side and given u on the opposite side. Under some condltlons an arrangement may be advisable in which heat is absorbed by one portibii of one of thefaces of the late, transmitted along by the plate by con action, and givenup to pipes in contact with another portion of the same face. Such an arrangement is shown in Fig. 7. The plate 11 here receives heat along the portion of the inner face below the partition 25, the source of heat being a furnace '(lnot shown) the heat is conducted by the p ate to the portion above the partition; and is absorbedby the pipes 8. The partition and the pipes may obviouslybe arranged vertically or horizontally or at some other angle, without departing from the underlying idea.

The details of mg invention may evidently bereadily varie The grooves need. 'not have 'the precise' shape shown, somewhat different) means of forcing the pipes 8 into the semircylind'rical grooves could be used;

and other variations could be introduced.

Moreover, while the invention is shown and described in connection with a superheater it can equally well be used in apparatus for heating a fluid other than steam, such as air, or water, or oil.

a What I claim is p 1. In apparatus of the class descrlbed the combination of a pipe conveying a fluid to I be heated, heat-conducting means adjacent. to the pipe, means to supply heat to the -heat-conducting means on the side away from thepipe, and means to exert variable pressure against said pipe in a direction to I orce" it against said heat-conducting means.

I rection to force it into the groove.

2. In apparatus of the class described the combination of a pipe conveying a fluid to be heated, a heat-conducting plate having a groove adapted to receive said pipe, means to supply v heat to the plate on the side away mm the pipe, and means to exert variable pressure against said pipe in a di- 3. In apparatus of the class described the combination of a pipe conveying a fluid to be heated, heat-conducting means adjag cent 'tothe pipe, means to supply heat to the heat-conducting means, and means to exert a 'variablapressure 'against'the pipe in a fdirectioirfto force it against the heat-conduetingmbijns.

4. In" apparatus of the class described 1 j thecom'bination of a' plurality of pipes conf --veyingfluid to be heated, a heat-conducting plate provided-.with.grooves ada ted to re- .ceive =said pipes, means to supp y heat to the plate on theside away from the pipes,

and means to exert variable pressure against the pipes in a direction to force them into the grooves. I L

5. In apparatus of the class described the combination of a plurality of arallel alined.

pipes, a heat-conducting p ate provided with semi-cylindrical grooves adapted to receive'th' plpes, means to heat the plate on the side away from the pipes, a bar engaging the against t e pipes with a varying degree of pressure.

6. In apparatus of the class described the combinatlon of a heat-transmitting plate, a source of heat imparting heat to one face of the plate, protective material of low heat conductivity shielding a portion of said face I irony-the source of heat, a plurality of fluidipes, and means to force the bar fluid-conveying pipes adjacent to the opposite face of the plate, and means to press said pipes against the plate with variable force.

8. In a paratus of the class described, the

.combinatlon of a pipe conveying a fluid to be heated, heat-conducting means held in contact with the pipe by pressure, and means to vary the extent of the surface of contact between the pipe and the heat-con ducting means by varying. the'amount of pressure. I a

9. In apparatus of the class described, the

combination of .a heat-transmitting plate,

a source of heat on one side of the plat,-.

protective material of low heat-conductivity shielding a portion of said side of the plate from the source of heat, theplate being re cessed on the side away from' fiie source of' heat, a. plurality of fluid-conveying pipes engaging said recesses, a backing plate in contact with the gripes on the side away from the recesses, an securing means to force said plates toward each other and thereby to force the pipes into the recesses.

BENJAMIN BROIDO. 

